<template>
    <div class="hello">
        <h1>{{ msg }}</h1>
        <button @click="TestM">testbtn</button>
        <h1 :style="{'display':displayd}">test btn ctn</h1>
    </div>
</template>

<script>
export default {
  name: "HelloWorld",
  data() {
    return {
      displayd: "none"
    };
  },
  created() {},
  props: {
    msg: String
  },
  methods: {
    TestM: function() {
      if (this.displayd === "none") this.displayd = "block";
      else this.displayd = "none";
      return true;
    }
  }
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang="less">
h3 {
  margin: 40px 0 0;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>
